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Abstract <p>The effect of a corrosive medium under tensile conditions on mechanical properties and fracture kinetics of martensitic 15Kh13N2 steel is studied using the acoustic emission and digital image correlation methods. The estimations are made for the degradation criteria including <i>b</i><sub>AE</sub> parameter, the activity of acoustic emission signals <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\({{\dot {N}}_{{{\text{AE}}}}}\)</EquationSource> <!--RusMet2670028Botvina-m1--> </InlineEquation>, their summary number Σ<i>N</i><sub>AE</sub>, the maximum value of the principal strain ε<sub>1max</sub>, and the plastic zone area, which decrease after holding of the samples in an H<sub>2</sub>S medium. The observed changes demonstrate an increase in the mean defect sizes and an increase in the damage of the material under study.</p>

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Corrosion Degradation of a High-Chromium Pipe Steel

  • 期刊论文

  • 发表日期：

    2026年1月1日

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  • L. R. Botvina,
  • M. R. Tyutin,
  • A. I. Bolotnikov,
  • A. A. Komissarov,
  • E. D. Dolgach,
  • E. A. Chistopol’tseva

摘要

Abstract

The effect of a corrosive medium under tensile conditions on mechanical properties and fracture kinetics of martensitic 15Kh13N2 steel is studied using the acoustic emission and digital image correlation methods. The estimations are made for the degradation criteria including bAE parameter, the activity of acoustic emission signals \({{\dot {N}}_{{{\text{AE}}}}}\) , their summary number ΣNAE, the maximum value of the principal strain ε1max, and the plastic zone area, which decrease after holding of the samples in an H2S medium. The observed changes demonstrate an increase in the mean defect sizes and an increase in the damage of the material under study.